Thomas joseph best



No. 612,153. Patented Dot. ll, I898.

T. .1. BEST. I HOT WATER FURNACE.

(Application filed. Mar. 12, 1898.)

m MM m6 mu m m m w: NORRXS PETERS 0a., worn-limo" WASNXNCITON, ac.

NITED STATES TIIOMAS JOSEPH BEST, OF MONTREAL, CANADA.

HO T-WATER FURNACE.

SPECIFICATION forming part of Letters Patent No. 612,153, dated October11, 1898.

Application filed March 12,1898.-

To all whom, it may concern:

Be it known that I, THOMAS, J OSEPH BEST, of the city of Montreal, inthe district of Montreal and Province of Quebec, Canada, have inventedcertain new and useful Improvements in Hot-Tater Furnaces; and I dohereby declare that the following is a full, clear, and exactdescription of the same.

My invention has for its object to provide a furnace that will givebetter results than have been obtainable heretofore from a furnace oflike capacity and one that will be simpler and less costly to construct.

To these ends the invention may be said briefly to consist of ahot-waterfurnace composed of an ash-pit section, a fire-chamber section,a top section or dome, and an intermediate section, the intermediatesection having a fire-flue extending at an angle from the rear to thefront thereof and opening at the rear downwardly into the fire-chamberand at the front upwardly into the dome, the dome preferably having adepression in the top thereof and the said sections being preferablyconnected together by an improved connection.

For full comprehension, however, of the foregoing reference must be hadto the accompanying drawings,forminga part of this specification, inwhich'like symbols indicate the same parts and wherein-- Figure 1 is afront elevation of a furnace constructed according to my invention, Fig.2, a transverse vertical sectional view of the Water-sections thereof,taken on line 2 2, Fig. 1; Fig. 3, a plan View of the fire-pot section;Fig. 4, a plan view of the intermediate section, and Fig. 5 a plan viewof the under side of the top section or dome.

The fire-pot section (shown in detail plan view in Fig. 3) consists ofan inner casing 40 and an outer casing 41, provided with a rear and twoside lateral extensions 42 and 43 43, respectively, and connected tosaid inner casing by means of upper and lower diaphragms 44 and i5,respectively, the lower diaphragm being intact, While the upperdiaphragm has openings 46 to register with the passages formed by saidlateral extensions 42 and 43 43, While the return-pipe 48 0f the heatingsystem takes into an opening in the rear of the outer casing near thebottom thereof and Serial No. 673,675. (No model.)

communicates with the jacket formed by said outerand inner casings.

The intermediate section-2'. 6.,13116 section next above and restingupon said fire-pot section-consists also of inner and outer casings 50and 51, respectively,connected together at their top and bottom edges bythe respective diaphragms 52 and 53, and the outer casing having a rearand two side lateral extensions 5e and 55, respectively, correspondingand registering with the extensions 42 and 43 43 of the fire-potsection. The lower diaphragm 53 extends completely across the lower endof said intermediate section except for a transverse opening 56,extending completely across from side to side of the inner casing 50atthe rear side but inside thereof, and openings 57, adapted to registerwith the passages formed by the side extensions 55 55, the remainder ofthe diaphragm beingintact and blinding the passage formed by the rearextension 54. The upper diaphragm 52 also extends completely across theend of this intermediate section, except for an opening 58,corresponding to the opening 56, but at the front and also inside ofsaid inner casing, and an opening 59, which registers with the saidpassage formed by the rear extension 54,the remainder of this diaphragmbeing intact and blinding the passages formed by the side extensions 55.Intermediate of these upper and lower diaphragms 52 and 53 50 arelocated a pair of diagonaldiaphragms and 61, connecting the edges ofsaid upper forward opening 58 to the edges of the lower rear opening 56,and the intervening portions of the inner casing between the diagonaldiaphragm 60 and the upper diaphragm 52, and the diagonal diaphragm 61and the lower diaphragm 53 are cut away, thus extending the jacket aboveand beneath the passage formed by said diagonal diaphragms. The topsection or dome consists also of inner and outer casings and 71,respectively, the outer casinghaving at its lower end a rear and twoside lateral extensions 72 and 73 73, respectively correponding to andregistering with the upper ends of the passages formed by the extensions54 and 55 55 of the intermediate section, the roof of the inner casingbeing indented, as at 74, to serve the double purpose of increasing thearea of the jacket and providing a baffler adapted to extendtransversely from side to side of said inner casing, thus providing anincreased water-space adjacent to the flow connection of the heater anda baiiier or bridge adapted to in a measure retard the passage of theheated gases rising to the chimney connection. This increasedwater-space at the flow connection has the eifect of increasing thepressure of the flowing water besides the degree of heat at that point,thereby securing the greatest possible efficiency of the heater, while adiaphragm 7 5 connects the lower edges of the inner and outer jackets,except for an opening 76, corresponding in area to and registering withthe upper end of the passage 59, the remainder of this diaphragm beingintact and blinding the passages 57 57.

The fire-pot is provided with a fire-door SO and the intermediate andtop sections with doors 81 and 82, respectively, the latter doors beingto allow of access to the combustionpassages for cleansing purposes,while a communication is effected with the chimney by a tubular flue83,and the flow-pipe is connected, preferably, as shown at 84, to thetop of the dome or top section.

My improved manner of connecting the sections together consists ofindependent chambers 90, formed, preferably, by vertical tubularextensions 91, cast in one with the intermediate section and havingtheir ends closed and provided with screw-threaded perforations 92,while the top section or dome and the fire-pot section have cast in onetherewith a series of perforated lugs 95, through which screw-bolts takeinto said screw-threaded perforations 92, thus effectively securing thesections together and at the same time providing bolt-spaces adapted toallow of expansion and prevent any leakage of joints.

The circuits through my improved furnace are, as indicated, the productsof combustion rising from the fire passing up through the diagonalpassage A to the dome and thence to the chimney, while the watercirculation is from the jacket of the fire-potthrough passages 57 to thejacket of the intermediate section and thence through passage 59 to thejackets of the dome or top section and out through the flow connection84 and, after traversing the coils and piping (not shown) of the heatingsystem, returns again to the jacket of the fire-pot section throughreturn connection 48.

An ash-pit section of any approved construction may be used.

What I claim is as follows:

1. In a hot-water furnace, a water-heating section consisting of avertical inclosing casing closed at its top end by a diaphragm havin g atransverse opening near the front thereof and at its bottom end by adiaphragm having a transverse opening near the rear thereof, a tubularsection extending diagonally through said casing and connecting theedges of the said respective openings and a flow and a return connectionto the space intermediate of said diagonal tubular section and theinterior of said casing, for the purpose set forth.

2. A hot-water furnace composed of an ashpit section a fire-chambersection inclosed by a water-jacket having a return connection; a domeinclosed by a water-jacket having a flow connection; and an intermediatesection; said intermediate section consisting of a vertical inclosingcasing closed at its top end by a diaphragm having a transverse openingnear the front thereof and at its bottom end by a diaphragm having atransverse opening near the rear thereof, a tubular section extendingdiagonally through said casing and connecting the edges of the saidrespective openings and pair of passages connecting the spaceintermediate of said diagonal tubular section and the interior of saidcasing with said respective inclosin g water-jackets, for the purposeset forth.

3. A hot-water furnace composed of an ashpit section; a fire-chambersection; a dome having inner and outer casings and 71 constituting awater-space and a heat-passage, and an intermediate section having afire-flue extending at an angle from rear to front and opening at therear downward into the firechamber and at the front upwardly into thedome, and the dome having a depression 74c in the top of the innercasing to provide an increased water-space adjacent to the flowconnection and a baffler or bridge in the heatpassage, for the purposeset forth.

4:. -In a hot-water furnace, a dome or top section having inner andouter casings 70 and 71 constituting a water-space and a heat-passage,and having depression 74: in the top of the inner casing to provide anincreased water-space adjacent to the flow connection and a baffler orbridge in the heat-passage, for the purpose set forth.

5. A furnace comprising an ash-pit section; a fire-chamber section, atop section or dome and an intermediate section; the fire-chambersection being inclosed by a water-jacket having a rear-extension and apair of side extensions forming vertical passages, and a return-pipeconnection at its lower end; the intermediate section comprising adiagonal passage extending from the lower rear end thereof to theforward top end thereof, a water jacket inclosing said passage andhaving a rear and a pair of side extensions forming vertical passagescorresponding to and registering with the above-mentioned verticalpassages, the lower end of the rear passage of this intermediate sectionbeing blinded; the top section or dome located above and resting uponsaid intermediate section and comprising a water-jacket having a rearand a pair of side lateral extensions forming vertical passagescorresponding to and registering with the above-mentioned verticalpassages, the lower ends of the side passages of this top section ordome being blinded, a flow-pipe connection at the. upper end of thisjacket, and a chimney connection with the top of the interior of saidtop section or dome, substantially as set forth.

6. Afurnace comprising an ash-pit section; a fire-chamber section, a topsection or dome and an intermediate section, the fire-chamber sectionbeing inclosed by a water-jacket having a rear extension and a pair ofside extensions forming vertical passages, and a returnpipe connectionat its lower end; an intermediate section located above and resting uponsaid fire-pot section and comprising a diagonal passage extending fromthe lower rear end thereof to the forward top end thereof, awater-jacket inclosing said passage and having a rear and a pair of sideextensions forming vertical passages corresponding to and registeringwith the above-mentioned vertical passages, the lower end of the rearpassage of this intermediate section being blinded; the top sectionordome comprising a water-jacket having a rear and a pair of sidelateral extensions forming vertical passages corresponding to andregistering with the above-mentioned vertical passages, the lower endsof the side passages of this top section or dome'being blinded, aflow-pipe connection at the upper end of this jacket, a downwardextension from the interior of the top of said dome and extendingtransversely thereof, and a chimney connection with the top of theinterior of said top section or dome, substantially as set forth.

7. A furnace comprising a series of independent sections supported oneupon the other, the intermediate section having a series of lateralchambers extending the full height of said section and being formed attheir upper and lower ends with screw-threaded perforations, and thesections located next above and below said intermediate section beingformed with laterally-projecting perforated lugs adapted to overlap saidchambers and be connected thereto by screw-bolts taking therethrough andinto said screw-threaded perforation, for the purpose set forth.

8. A furnace comprising an ash-pit section, a fire-chamber section, atop section or dome and an intermediate section, the fire-chambersection being inclosed by a water-jacket having a rear extension and apair of side extensions forming vertical passages, and a return-pipeconnection at its lower end; the intermediate section comprisingadiagonal passage extending from the lower rear end thereof, to theforward top end thereof, and awater-jacket inclosing said passage andhaving a rear and a pair of side extensions forming vertical passagescorresponding to and registering with the above-mentioned verticalpassages, and the lower end of the rear passage of this intermediatesection being blinded; the top section or dome comprising a water-jackethaving a rear and a pair of side lateral extensions forming verticalpassages corresponding to and registering with the above-mentionedvertical passages, the lower ends of the side passages of this topsection or dome being blinded, a flow-pipe connection at the upper endof this jacket, and a chimney connection with the top of the interior ofsaid top section or dome, the intermediate section also having a seriesof lateral chambers extending the full height of said section and beingformed at their upper and lower ends with screw-threaded perforations,and the top and fire-pot sections being formed with laterallyprojectingperforated lugs adapted to overlap said chambers and be connectedthereto by screw-bolts taking therethrough and into said screw-threadedperfo- V rations substantially as set forth.

In testimony whereof I have affixedmy signature in presence of twowitnesses.

THOMAS JOSEPH BEST.

Vitnesses:

WILL P. MoFEAr, FRED. J. SEARS.

